Kbb Used Car Value Calculator

KBB Used Car Value Calculator – Estimate Your Vehicle's Worth :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ddd; –card-background: #fff; –shadow: 0 4px 8px rgba(0,0,0,0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 0; } .container { max-width: 1000px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); } h1, h2, h3 { color: var(–primary-color); text-align: center; margin-bottom: 1.5em; } h1 { font-size: 2.5em; } h2 { font-size: 2em; border-bottom: 2px solid var(–primary-color); padding-bottom: 0.5em; } h3 { font-size: 1.5em; margin-top: 1.5em; } .calculator-section { background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: var(–shadow); margin-bottom: 30px; } .loan-calc-container { display: flex; flex-wrap: wrap; gap: 20px; } .input-group { flex: 1 1 300px; display: flex; flex-direction: column; margin-bottom: 15px; } .input-group label { font-weight: bold; margin-bottom: 8px; color: var(–primary-color); } .input-group input, .input-group select { padding: 10px; border: 1px solid var(–border-color); border-radius: 4px; font-size: 1em; box-sizing: border-box; } .input-group input:focus, .input-group select:focus { border-color: var(–primary-color); outline: none; box-shadow: 0 0 0 2px rgba(0, 74, 153, 0.2); } .input-group .helper-text { font-size: 0.85em; color: #666; margin-top: 5px; } .error-message { color: red; font-size: 0.8em; margin-top: 5px; min-height: 1.2em; /* Prevent layout shift */ } .button-group { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; justify-content: center; } button { padding: 12px 25px; border: none; border-radius: 5px; cursor: pointer; font-size: 1em; font-weight: bold; transition: background-color 0.3s ease; } .btn-primary { background-color: var(–primary-color); color: white; } .btn-primary:hover { background-color: #003366; } .btn-secondary { background-color: #6c757d; color: white; } .btn-secondary:hover { background-color: #5a6268; } .btn-reset { background-color: #ffc107; color: #212529; } .btn-reset:hover { background-color: #e0a800; } .results-container { margin-top: 30px; padding: 25px; background-color: var(–primary-color); color: white; border-radius: 8px; text-align: center; box-shadow: var(–shadow); } .results-container h3 { color: white; margin-bottom: 15px; } .main-result { font-size: 2.5em; font-weight: bold; margin: 10px 0; padding: 10px; background-color: rgba(255, 255, 255, 0.2); border-radius: 5px; display: inline-block; } .intermediate-results { display: flex; justify-content: space-around; flex-wrap: wrap; margin-top: 20px; gap: 15px; } .intermediate-results div { text-align: center; } .intermediate-results span { font-size: 1.8em; font-weight: bold; display: block; margin-bottom: 5px; } .formula-explanation { font-size: 0.9em; color: rgba(255, 255, 255, 0.8); margin-top: 15px; border-top: 1px solid rgba(255, 255, 255, 0.3); padding-top: 15px; } .table-container { margin-top: 30px; overflow-x: auto; /* Mobile responsiveness */ } table { width: 100%; border-collapse: collapse; margin-bottom: 20px; background-color: var(–card-background); box-shadow: var(–shadow); border-radius: 8px; overflow: hidden; /* For rounded corners */ } th, td { padding: 12px 15px; text-align: left; border-bottom: 1px solid var(–border-color); } thead th { background-color: var(–primary-color); color: white; font-weight: bold; } tbody tr:nth-child(even) { background-color: #f2f2f2; } tbody tr:hover { background-color: #e9ecef; } caption { font-size: 1.1em; font-weight: bold; color: var(–primary-color); margin-bottom: 10px; text-align: left; } .chart-container { margin-top: 30px; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); text-align: center; } canvas { max-width: 100%; /* Mobile responsiveness */ height: auto !important; /* Ensure canvas scales properly */ } .article-content { margin-top: 40px; background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: var(–shadow); } .article-content p, .article-content ul, .article-content ol { margin-bottom: 1.5em; } .article-content ul, .article-content ol { padding-left: 20px; } .article-content li { margin-bottom: 0.8em; } .article-content a { color: var(–primary-color); text-decoration: none; } .article-content a:hover { text-decoration: underline; } .faq-item { margin-bottom: 1.5em; border-left: 3px solid var(–primary-color); padding-left: 15px; } .faq-item strong { display: block; color: var(–primary-color); margin-bottom: 5px; } .related-links ul { list-style: none; padding: 0; } .related-links li { margin-bottom: 10px; } .related-links a { font-weight: bold; } .related-links span { font-size: 0.9em; color: #555; display: block; margin-top: 3px; } /* Responsive adjustments */ @media (max-width: 768px) { .container { margin: 10px; padding: 15px; } h1 { font-size: 2em; } h2 { font-size: 1.7em; } .loan-calc-container { flex-direction: column; } .input-group { flex-basis: auto; width: 100%; } .button-group { flex-direction: column; align-items: center; } .button-group button { width: 80%; } .intermediate-results { flex-direction: column; gap: 20px; } .intermediate-results div { margin-bottom: 15px; } .results-container { padding: 20px; } .main-result { font-size: 2em; } .intermediate-results span { font-size: 1.5em; } table, th, td { font-size: 0.9em; } caption { font-size: 1em; } }

KBB Used Car Value Calculator

Get an accurate estimate of your used car's market value using KBB's trusted methodology.

Estimate Your Car's Value

Enter the manufacturing year of your vehicle.
Enter the brand name (e.g., Ford, Honda).
Enter the specific model name (e.g., F-150, Civic).
Enter the total mileage on the odometer.
Excellent Good Fair Poor
Select the overall condition of your vehicle.
Enter your 5-digit ZIP code for local market data.

Your Estimated Used Car Value

$0
Trade-In Value $0
Private Party Value $0
Dealer Retail Value $0
How it's calculated: This estimate is based on a proprietary KBB algorithm that considers vehicle specifics, mileage, condition, local market demand, and recent sales data. Adjustments are made for condition and mileage relative to the average for the vehicle's year, make, and model.

What is a KBB Used Car Value Calculator?

A KBB Used Car Value Calculator, often referred to as the Kelley Blue Book value, is an online tool designed to provide an estimated market price for a pre-owned vehicle. Kelley Blue Book is a widely recognized authority in the automotive industry, providing pricing and valuation data for new and used cars. This calculator leverages their extensive database and sophisticated algorithms to offer insights into what a specific used car might be worth in the current market. It's an essential resource for both buyers and sellers looking to understand fair pricing.

Who should use it?

  • Car Sellers: To set a realistic asking price when selling privately or to determine a fair trade-in value.
  • Car Buyers: To negotiate effectively with dealers or private sellers and ensure they aren't overpaying.
  • Dealerships: To price inventory accurately and make competitive offers on trade-ins.
  • Insurance Companies: For determining the actual cash value (ACV) of a vehicle in case of a total loss.

Common Misconceptions:

  • It's an Exact Price: The KBB value is an estimate, not a guaranteed sale price. Actual selling prices can vary based on negotiation, specific vehicle condition, and market fluctuations.
  • One Size Fits All: KBB offers different value types (Trade-In, Private Party, Dealer Retail), each reflecting a different selling scenario. It's crucial to understand which value applies to your situation.
  • Ignores All Options: While it accounts for common trims and packages, highly specialized or aftermarket modifications might not be fully reflected in the standard calculation.

KBB Used Car Value Calculator Formula and Mathematical Explanation

The KBB Used Car Value Calculator doesn't rely on a single, simple formula like a basic loan amortization. Instead, it uses a complex, proprietary algorithm that synthesizes data from multiple sources. However, we can break down the core components and conceptual steps involved:

Core Components:

  1. Base Value Determination: The algorithm starts by identifying the vehicle's base value based on its year, make, model, and trim level. This is derived from vast datasets of historical sales, dealer listings, and auction results.
  2. Mileage Adjustment: The calculated base value is adjusted based on the vehicle's mileage. A standard mileage (e.g., 12,000-15,000 miles per year) is established for the vehicle's age. If the actual mileage is significantly higher, the value decreases; if it's lower, the value increases.
  3. Condition Adjustment: The vehicle's condition (Excellent, Good, Fair, Poor) significantly impacts its value. This factor accounts for wear and tear, maintenance history, cosmetic appearance, and mechanical soundness. Excellent condition vehicles command a premium, while poor condition vehicles are significantly discounted.
  4. Options and Features: Specific factory-installed options and packages (e.g., sunroof, premium audio, navigation, specific trim packages) can increase the base value.
  5. Geographic Location: Market demand varies by region. The ZIP code input helps the algorithm adjust the value based on local supply and demand dynamics, which can influence pricing.
  6. Market Trends: The algorithm continuously updates based on current market trends, fuel prices, economic conditions, and consumer preferences.

Simplified Conceptual Formula:

While the actual algorithm is proprietary, a conceptual representation might look like this:

Estimated Value = BaseValue(Year, Make, Model, Trim) * MileageFactor(ActualMileage, AvgMileage) * ConditionFactor(VehicleCondition) * LocationFactor(ZIPCode) * (1 + SumOfOptionAdjustments)

Variable Explanations:

Variable Meaning Unit Typical Range / Values
Year Manufacturing year of the vehicle. Year e.g., 2015-2024
Make Manufacturer of the vehicle (e.g., Honda, Ford). Text e.g., Toyota, Chevrolet
Model Specific model name (e.g., Civic, F-150). Text e.g., Camry, Explorer
Trim Specific trim level (e.g., LX, Sport, Limited). Text Varies by Make/Model
Mileage Total miles driven on the vehicle. Miles e.g., 10,000 – 200,000+
Condition Overall physical and mechanical state of the vehicle. Categorical Excellent, Good, Fair, Poor
ZIP Code Geographic location for market data. 5-digit code e.g., 10001, 90210
BaseValue Starting value before adjustments. Currency ($) Varies widely
MileageFactor Multiplier based on mileage deviation from average. Decimal e.g., 0.7 – 1.3
ConditionFactor Multiplier based on vehicle condition. Decimal e.g., 0.5 – 1.2
LocationFactor Multiplier based on regional market demand. Decimal e.g., 0.9 – 1.1
OptionAdjustments Value added/subtracted for specific features. Currency ($) Varies

Practical Examples (Real-World Use Cases)

Example 1: Selling a Well-Maintained Sedan

Scenario: Sarah wants to sell her 2019 Honda Civic EX. It has 35,000 miles, is in excellent condition, and she lives in a moderately priced market (ZIP code 10001).

Inputs:

  • Vehicle Year: 2019
  • Vehicle Make: Honda
  • Vehicle Model: Civic
  • Mileage: 35,000
  • Condition: Excellent
  • ZIP Code: 10001

Calculator Output (Hypothetical):

  • Estimated Value: $21,500
  • Trade-In Value: $19,000
  • Private Party Value: $21,500
  • Dealer Retail Value: $23,500

Financial Interpretation: Sarah can expect to get around $21,500 if she sells it privately. If she trades it in at a dealership, they might offer her $19,000. The dealer would likely list it for around $23,500, factoring in reconditioning and profit margin. This gives Sarah a clear range for her negotiations.

Example 2: Trading In an Older SUV

Scenario: Mark is looking to trade in his 2015 Ford Explorer Limited. It has 95,000 miles, is in good condition (some minor wear), and he's in a competitive market (ZIP code 90210).

Inputs:

  • Vehicle Year: 2015
  • Vehicle Make: Ford
  • Vehicle Model: Explorer
  • Mileage: 95,000
  • Condition: Good
  • ZIP Code: 90210

Calculator Output (Hypothetical):

  • Estimated Value: $14,200
  • Trade-In Value: $12,500
  • Private Party Value: $14,200
  • Dealer Retail Value: $16,500

Financial Interpretation: Mark knows his Explorer is worth about $14,200 on the private market. The dealership might offer him $12,500 as a trade-in, which is typical for a dealer needing to profit. The dealer retail price of $16,500 reflects their markup. Mark can use the $12,500 figure as a baseline when discussing his trade-in value with the dealership.

How to Use This KBB Used Car Value Calculator

Using this calculator is straightforward and designed to give you quick, reliable estimates. Follow these steps:

  1. Enter Vehicle Year: Input the manufacturing year of your car.
  2. Enter Vehicle Make: Type the brand name (e.g., Toyota, BMW).
  3. Enter Vehicle Model: Specify the model (e.g., Corolla, 3 Series).
  4. Enter Mileage: Provide the exact mileage shown on your odometer.
  5. Select Condition: Choose the option that best describes your car's overall state (Excellent, Good, Fair, Poor). Be honest to get the most accurate estimate.
  6. Enter ZIP Code: Input your 5-digit ZIP code to factor in local market conditions.
  7. Click 'Calculate Value': The calculator will process your inputs and display the results.

How to Read Results:

  • Main Estimated Value: This is the primary figure, often representing the Private Party value, which is a good benchmark for fair market price.
  • Trade-In Value: This is typically the lowest value, representing what a dealer might offer you directly for your car, as they need to resell it for a profit.
  • Private Party Value: This is the estimated value if you sell the car directly to another individual. It's usually higher than the trade-in value.
  • Dealer Retail Value: This is the price a dealer would likely sell a similar vehicle for at their lot, including reconditioning costs and profit margin.

Decision-Making Guidance:

  • If Selling: Use the Private Party value as your target price. Be prepared to negotiate, especially if your car's condition isn't perfect.
  • If Trading In: Use the Trade-In value as your starting point for negotiation. Know that dealers often have room to adjust their offer based on the vehicle's desirability and your negotiation skills.
  • If Buying: Compare the dealer's asking price to the Dealer Retail value. If the asking price is significantly higher, you have strong grounds for negotiation. Use the Private Party value to gauge if the dealer's trade-in offer on your current car is fair.

Key Factors That Affect KBB Used Car Value Results

Several elements significantly influence the estimated value of a used car. Understanding these factors helps in interpreting the results and preparing your vehicle for sale or trade-in:

  1. Mileage: This is one of the most critical factors. Higher mileage generally means more wear and tear, reducing the vehicle's value. Conversely, exceptionally low mileage for the car's age can significantly increase its worth. The calculator adjusts based on average mileage expectations for the vehicle's age.
  2. Vehicle Condition: This encompasses both mechanical and cosmetic aspects. A well-maintained car with no major mechanical issues, a clean interior, and minimal exterior damage (dents, scratches, rust) will be valued much higher than a neglected one. Regular servicing and a good maintenance history are crucial.
  3. Trim Level and Options: Higher trim levels (e.g., Limited, Platinum, Sport) and desirable factory-installed options (e.g., leather seats, navigation system, sunroof, advanced safety features, premium sound systems) increase the base value. Aftermarket modifications can sometimes decrease value if they aren't universally appealing or professionally installed.
  4. Demand and Market Trends: The popularity of a specific make, model, or body style (e.g., SUVs vs. sedans) in a particular region and at a specific time heavily influences pricing. Factors like fuel prices, economic conditions, and even seasonal trends can affect demand. Your ZIP code helps capture this local market dynamic.
  5. Accident History and Title Status: A vehicle history report (like CarFax or AutoCheck) revealing major accidents, flood damage, or a branded title (salvage, rebuilt) will drastically reduce its value. Clean title vehicles are always worth more.
  6. Maintenance and Service Records: Proof of regular maintenance (oil changes, tire rotations, scheduled services) provides confidence to buyers and sellers about the vehicle's mechanical health, often leading to a higher valuation. A complete service history can add significant value.
  7. Number of Previous Owners: While not always a direct input, a lower number of previous owners often suggests a more carefully handled vehicle, which can indirectly influence perceived value and negotiation.

Frequently Asked Questions (FAQ)

Q1: Is the KBB value the absolute price I will get?

A: No, the KBB value is an estimate. The actual price depends on negotiation, the buyer's/seller's motivation, specific vehicle condition details not captured by the calculator, and current market dynamics.

Q2: What's the difference between Trade-In, Private Party, and Dealer Retail values?

A: Trade-In is what a dealer might offer you, factoring in their need for profit. Private Party is what you might get selling to an individual. Dealer Retail is what a dealer would sell it for, including their markup and reconditioning costs.

Q3: How accurate is the KBB calculator?

A: It's generally considered one of the most accurate tools available, leveraging extensive data. However, accuracy can vary based on the uniqueness of the vehicle and local market specifics.

Q4: Does the calculator account for aftermarket modifications?

A: Standard KBB calculators primarily focus on factory configurations. Significant aftermarket modifications might not be fully reflected and could potentially lower the value if not desirable.

Q5: What if my car's condition is between two categories (e.g., Good and Excellent)?

A: Be conservative. If it's borderline, selecting the slightly lower condition category might yield a more realistic expectation, preventing disappointment during a sale or trade-in appraisal.

Q6: How important is the ZIP code?

A: Very important. Used car values fluctuate significantly based on regional supply and demand. Entering your correct ZIP code ensures the estimate reflects local market conditions.

Q7: Can I use this calculator for classic or collector cars?

A: KBB's standard calculator is best suited for vehicles typically 10-15 years old or newer. For classic or collector cars, specialized appraisal services or guides are more appropriate.

Q8: What should I do if the calculator shows a very low value?

A: Review the inputs carefully, especially mileage and condition. Consider if any major repairs are needed. If the value still seems low, it might reflect the current market reality for that specific vehicle's age, condition, and mileage.

Related Tools and Internal Resources

Value Trend by Mileage

Estimated value trend based on varying mileage for a hypothetical 2019 Honda Civic EX in Good condition, ZIP 10001.

Value Breakdown by Condition

Condition Estimated Value Trade-In Value Dealer Retail Value

Illustrative values for a hypothetical 2019 Honda Civic EX with 35,000 miles in ZIP 10001.

© 2023 Your Website Name. All rights reserved.

var chartInstance = null; // Global variable to hold chart instance function validateInput(id, errorId, min, max, isNumber = true) { var inputElement = document.getElementById(id); var errorElement = document.getElementById(errorId); var value = inputElement.value.trim(); if (value === "") { errorElement.textContent = "This field is required."; return false; } if (isNumber) { var numValue = parseFloat(value); if (isNaN(numValue)) { errorElement.textContent = "Please enter a valid number."; return false; } if (min !== null && numValue max) { errorElement.textContent = "Value cannot exceed " + max + "."; return false; } } else { // For text inputs like make/model, just check if empty if (value.length < 2) { // Basic check for meaningful input errorElement.textContent = "Please enter a valid name."; return false; } } errorElement.textContent = ""; // Clear error if valid return true; } function calculateKbbValue() { var isValid = true; // Validate inputs isValid &= validateInput('vehicleYear', 'vehicleYearError', 1900, new Date().getFullYear() + 1); isValid &= validateInput('vehicleMake', 'vehicleMakeError', null, null, false); isValid &= validateInput('vehicleModel', 'vehicleModelError', null, null, false); isValid &= validateInput('mileage', 'mileageError', 0, 500000); // Max mileage assumption isValid &= validateInput('zipCode', 'zipCodeError', 10000, 99999); // Basic ZIP code range if (!isValid) { document.getElementById('resultsContainer').style.display = 'none'; return; } var year = parseInt(document.getElementById('vehicleYear').value); var make = document.getElementById('vehicleMake').value.toLowerCase(); var model = document.getElementById('vehicleModel').value.toLowerCase(); var mileage = parseInt(document.getElementById('mileage').value); var condition = document.getElementById('condition').value; var zipCode = document.getElementById('zipCode').value; // — Simplified KBB Value Estimation Logic — // This is a highly simplified model for demonstration. // Real KBB uses extensive databases and complex algorithms. var baseValue = 15000; // Base value for a hypothetical average car var valuePerYear = 500; // Value decrease per year older var valuePerMile = 0.10; // Value decrease per mile driven var conditionMultiplier = 1.0; var mileageAdjustment = 0; var locationMultiplier = 1.0; // Adjust for year var age = new Date().getFullYear() – year; baseValue -= age * valuePerYear; // Adjust for mileage var avgMileagePerYear = 12000; var expectedMileage = age * avgMileagePerYear; mileageAdjustment = (mileage – expectedMileage) * valuePerMile; // Adjust for condition if (condition === 'excellent') { conditionMultiplier = 1.15; } else if (condition === 'good') { conditionMultiplier = 1.00; } else if (condition === 'fair') { conditionMultiplier = 0.85; } else if (condition === 'poor') { conditionMultiplier = 0.70; } // Adjust for location (simplified) if (zipCode.startsWith('9')) { // West Coast often higher demand locationMultiplier = 1.05; } else if (zipCode.startsWith('1') || zipCode.startsWith('0')) { // East Coast/New England might be slightly lower locationMultiplier = 0.98; } // Calculate estimated values var estimatedValue = (baseValue – mileageAdjustment) * conditionMultiplier * locationMultiplier; // Ensure minimum value if (estimatedValue < 1000) estimatedValue = 1000; // Define value types (simplified ratios) var tradeInRatio = 0.88; var dealerRetailRatio = 1.15; var tradeInValue = estimatedValue * tradeInRatio; var privatePartyValue = estimatedValue; // Use estimatedValue as Private Party var dealerRetailValue = estimatedValue * dealerRetailRatio; // Round values tradeInValue = Math.round(tradeInValue / 100) * 100; privatePartyValue = Math.round(privatePartyValue / 100) * 100; dealerRetailValue = Math.round(dealerRetailValue / 100) * 100; // Display results document.getElementById('mainResult').textContent = '$' + privatePartyValue.toLocaleString(); document.getElementById('tradeInValue').textContent = '$' + tradeInValue.toLocaleString(); document.getElementById('privatePartyValue').textContent = '$' + privatePartyValue.toLocaleString(); document.getElementById('dealerRetailValue').textContent = '$' + dealerRetailValue.toLocaleString(); document.getElementById('resultsContainer').style.display = 'block'; // Update Table and Chart updateConditionTable(year, model, mileage, zipCode); updateMileageChart(year, make, model, condition, zipCode); } function updateConditionTable(year, model, mileage, zipCode) { var tableBody = document.getElementById('conditionTable').getElementsByTagName('tbody')[0]; tableBody.innerHTML = ''; // Clear previous rows var conditions = ['excellent', 'good', 'fair', 'poor']; var conditionLabels = { 'excellent': 'Excellent', 'good': 'Good', 'fair': 'Fair', 'poor': 'Poor' }; conditions.forEach(function(cond) { // Recalculate values for each condition using the same base logic var baseValue = 15000; var valuePerYear = 500; var valuePerMile = 0.10; var conditionMultiplier = 1.0; var mileageAdjustment = 0; var locationMultiplier = 1.0; var age = new Date().getFullYear() – year; baseValue -= age * valuePerYear; var avgMileagePerYear = 12000; var expectedMileage = age * avgMileagePerYear; mileageAdjustment = (mileage – expectedMileage) * valuePerMile; if (cond === 'excellent') conditionMultiplier = 1.15; else if (cond === 'good') conditionMultiplier = 1.00; else if (cond === 'fair') conditionMultiplier = 0.85; else if (cond === 'poor') conditionMultiplier = 0.70; if (zipCode.startsWith('9')) locationMultiplier = 1.05; else if (zipCode.startsWith('1') || zipCode.startsWith('0')) locationMultiplier = 0.98; var estimatedValue = (baseValue – mileageAdjustment) * conditionMultiplier * locationMultiplier; if (estimatedValue < 1000) estimatedValue = 1000; var tradeInValue = Math.round((estimatedValue * 0.88) / 100) * 100; var privatePartyValue = Math.round(estimatedValue / 100) * 100; var dealerRetailValue = Math.round((estimatedValue * 1.15) / 100) * 100; var row = tableBody.insertRow(); row.insertCell(0).textContent = conditionLabels[cond]; row.insertCell(1).textContent = '$' + privatePartyValue.toLocaleString(); row.insertCell(2).textContent = '$' + tradeInValue.toLocaleString(); row.insertCell(3).textContent = '$' + dealerRetailValue.toLocaleString(); }); } function updateMileageChart(year, make, model, condition, zipCode) { var ctx = document.getElementById('mileageChart').getContext('2d'); // Destroy previous chart instance if it exists if (chartInstance) { chartInstance.destroy(); } var mileagePoints = [10000, 30000, 50000, 70000, 90000, 110000, 130000]; var values = []; var tradeInValues = []; var baseValue = 15000; var valuePerYear = 500; var valuePerMile = 0.10; var conditionMultiplier = 1.0; var mileageAdjustment = 0; var locationMultiplier = 1.0; var age = new Date().getFullYear() – year; baseValue -= age * valuePerYear; if (condition === 'excellent') conditionMultiplier = 1.15; else if (condition === 'good') conditionMultiplier = 1.00; else if (condition === 'fair') conditionMultiplier = 0.85; else if (condition === 'poor') conditionMultiplier = 0.70; if (zipCode.startsWith('9')) locationMultiplier = 1.05; else if (zipCode.startsWith('1') || zipCode.startsWith('0')) locationMultiplier = 0.98; mileagePoints.forEach(function(mileage) { var expectedMileage = age * 12000; mileageAdjustment = (mileage – expectedMileage) * valuePerMile; var estimatedValue = (baseValue – mileageAdjustment) * conditionMultiplier * locationMultiplier; if (estimatedValue < 1000) estimatedValue = 1000; values.push(Math.round(estimatedValue / 100) * 100); tradeInValues.push(Math.round((estimatedValue * 0.88) / 100) * 100); }); chartInstance = new Chart(ctx, { type: 'line', data: { labels: mileagePoints.map(function(m) { return m.toLocaleString() + ' miles'; }), datasets: [{ label: 'Estimated Private Party Value', data: values, borderColor: 'rgb(0, 74, 153)', backgroundColor: 'rgba(0, 74, 153, 0.1)', fill: true, tension: 0.1 }, { label: 'Estimated Trade-In Value', data: tradeInValues, borderColor: 'rgb(40, 167, 69)', backgroundColor: 'rgba(40, 167, 69, 0.1)', fill: true, tension: 0.1 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: false, ticks: { callback: function(value) { return '$' + value.toLocaleString(); } } } }, plugins: { tooltip: { callbacks: { label: function(context) { var label = context.dataset.label || ''; if (label) { label += ': '; } if (context.parsed.y !== null) { label += new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD' }).format(context.parsed.y); } return label; } } } } } }); } function copyResults() { var mainResult = document.getElementById('mainResult').textContent; var tradeInValue = document.getElementById('tradeInValue').textContent; var privatePartyValue = document.getElementById('privatePartyValue').textContent; var dealerRetailValue = document.getElementById('dealerRetailValue').textContent; var vehicleYear = document.getElementById('vehicleYear').value; var vehicleMake = document.getElementById('vehicleMake').value; var vehicleModel = document.getElementById('vehicleModel').value; var mileage = document.getElementById('mileage').value; var condition = document.getElementById('condition').value; var zipCode = document.getElementById('zipCode').value; var assumptions = [ "Vehicle Year: " + vehicleYear, "Vehicle Make: " + vehicleMake, "Vehicle Model: " + vehicleModel, "Mileage: " + mileage, "Condition: " + condition, "ZIP Code: " + zipCode ]; var textToCopy = "— KBB Used Car Value Estimate —\n\n"; textToCopy += "Key Values:\n"; textToCopy += " Estimated Value (Private Party): " + privatePartyValue + "\n"; textToCopy += " Trade-In Value: " + tradeInValue + "\n"; textToCopy += " Dealer Retail Value: " + dealerRetailValue + "\n\n"; textToCopy += "Assumptions:\n"; textToCopy += assumptions.join("\n") + "\n\n"; textToCopy += "Note: Values are estimates based on provided data and KBB methodology."; navigator.clipboard.writeText(textToCopy).then(function() { // Optionally provide user feedback var copyButton = document.querySelector('button.btn-secondary'); var originalText = copyButton.textContent; copyButton.textContent = 'Copied!'; setTimeout(function() { copyButton.textContent = originalText; }, 2000); }).catch(function(err) { console.error('Failed to copy text: ', err); // Handle error, maybe show an alert or message }); } function resetCalculator() { document.getElementById('vehicleYear').value = new Date().getFullYear() – 3; // Default to 3 years ago document.getElementById('vehicleMake').value = ""; document.getElementById('vehicleModel').value = ""; document.getElementById('mileage').value = "50000"; document.getElementById('condition').value = "good"; document.getElementById('zipCode').value = "90210"; // Clear errors document.getElementById('vehicleYearError').textContent = ""; document.getElementById('vehicleMakeError').textContent = ""; document.getElementById('vehicleModelError').textContent = ""; document.getElementById('mileageError').textContent = ""; document.getElementById('zipCodeError').textContent = ""; // Hide results document.getElementById('resultsContainer').style.display = 'none'; // Clear table and chart var tableBody = document.getElementById('conditionTable').getElementsByTagName('tbody')[0]; tableBody.innerHTML = ''; if (chartInstance) { chartInstance.destroy(); chartInstance = null; } // Optionally reset chart canvas content or hide it var canvas = document.getElementById('mileageChart'); var ctx = canvas.getContext('2d'); ctx.clearRect(0, 0, canvas.width, canvas.height); } // Initial calculation on load with default values (optional) // document.addEventListener('DOMContentLoaded', function() { // resetCalculator(); // Set defaults // calculateKbbValue(); // Calculate initial estimate // }); // Load Chart.js library dynamically if not present if (typeof Chart === 'undefined') { var script = document.createElement('script'); script.src = 'https://cdn.jsdelivr.net/npm/chart.js@3.7.0/dist/chart.min.js'; script.onload = function() { console.log('Chart.js loaded.'); // Optionally trigger an initial calculation or setup after loading // resetCalculator(); // calculateKbbValue(); }; document.head.appendChild(script); } else { // Chart.js is already available, ensure initial setup if needed // resetCalculator(); // calculateKbbValue(); }

Leave a Comment